Add the ability to manually run the workflow updating the SDK (#1603)

This avoids waiting for the scheduled run on the next day when we make
fixes in the code generator to fix an update.

Author: stof

.github/workflows/watch.yml

@@ -3,6 +3,7 @@ name: Watch for changes
 on:
   schedule:
     - cron: "0 6 * * *"
+  workflow_dispatch: ~
 
 jobs:
   generated-code: